{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "registry_cache_ms": 5000,
        "mem_pool_mb": 500,
        "sandbox": "sock",
        "docker_runtime": "",
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 2.2728068828582764,
      "total_seconds": 2.4731929302215576,
      "stats": {
        "pings_per_sec": 439.9886496610896
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:06 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:06 remove worker.pid",
        "2019/11/19 21:45:06 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "registry_cache_ms": 5000,
        "mem_pool_mb": 500,
        "sandbox": "sock",
        "docker_runtime": "",
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "downsize_paused_mem": true,
          "import_cache": false,
          "reuse_cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 11.793722152709961,
      "total_seconds": 12.037471771240234,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 289,
        "Create()/acquire-cgroup.cnt": 10,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 10,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 10,
        "Create()/fresh-proc.ms-avg": 275,
        "Create()/make-root-fs.cnt": 10,
        "Create()/make-root-fs.ms-avg": 13,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 10,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 10,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 10,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 2932,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 143,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 20,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1506,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2932
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:19 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:19 remove worker.pid",
        "2019/11/19 21:45:19 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 6.359080076217651,
      "total_seconds": 6.595513105392456,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 96,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 144,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1582,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 44,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 28,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 4,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 988,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1582
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:25 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:25 remove worker.pid",
        "2019/11/19 21:45:25 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "registry_cache_ms": 5000,
        "mem_pool_mb": 500,
        "sandbox": "docker",
        "docker_runtime": "",
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "downsize_paused_mem": true,
          "import_cache": false,
          "reuse_cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 23.31490683555603,
      "total_seconds": 24.770206212997437,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1045,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 422,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 5817,
        "Pause().cnt": 4,
        "Pause().ms-avg": 29,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2698,
        "web-request.cnt": 4,
        "web-request.ms-avg": 5817
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:49 Kill function: install3",
        "2019/11/19 21:45:49 Destroy() [SB 9]",
        "2019/11/19 21:45:49 Kill function: echo",
        "2019/11/19 21:45:49 Destroy() [SB 0]",
        "2019/11/19 21:45:50 Kill function: install",
        "2019/11/19 21:45:50 Destroy() [SB 6]",
        "2019/11/19 21:45:50 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:50 remove worker.pid",
        "2019/11/19 21:45:50 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 0.2227320671081543,
      "total_seconds": 0.4549398422241211,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 97,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 178,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 219,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 13,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 7,
        "web-request.cnt": 1,
        "web-request.ms-avg": 219
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:50 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:50 remove worker.pid",
        "2019/11/19 21:45:50 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 0.8825907707214355,
      "total_seconds": 1.1164937019348145,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 80,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 9,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 142,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 878,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 710,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 9,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 9,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 878
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:45:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:45:52 remove worker.pid",
        "2019/11/19 21:45:52 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 39.92432737350464,
      "total_seconds": 40.157774448394775,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 95,
        "Create()/acquire-cgroup.cnt": 13,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 13,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 8,
        "Create()/fresh-proc.ms-avg": 148,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 13,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 13,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 13,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 13,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 7981,
        "Pause().cnt": 10,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 287,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 30,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 5,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 5,
        "pull-lambda.ms-avg": 5,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 5448,
        "web-request.cnt": 5,
        "web-request.ms-avg": 7981
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:32 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:46:32 remove worker.pid",
        "2019/11/19 21:46:32 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": false,
        "seconds": 5,
        "procs": 1,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 5.056825160980225,
      "total_seconds": 5.279452800750732,
      "stats": {
        "sandboxes_per_sec": 6.0
      },
      "ol-stats": {
        "Create().cnt": 30,
        "Create().ms-avg": 149,
        "Create()/acquire-cgroup.cnt": 30,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 30,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 30,
        "Create()/fresh-proc.ms-avg": 144,
        "Create()/make-root-fs.cnt": 30,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 60,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 30,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 30,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 30,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 47,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:46:37 remove worker.pid",
        "2019/11/19 21:46:37 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 1,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 10.168614625930786,
      "total_seconds": 10.398067235946655,
      "stats": {
        "sandboxes_per_sec": 43.1
      },
      "ol-stats": {
        "Create().cnt": 432,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 432,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 432,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 431,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 432,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 863,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 432,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 432,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 432,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 431,
        "childExit().ms-avg": 0,
        "fork().cnt": 431,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 431,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 449,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 431,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:47 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:46:47 remove worker.pid",
        "2019/11/19 21:46:47 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 15,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 10.350663661956787,
      "total_seconds": 10.950746536254883,
      "stats": {
        "sandboxes_per_sec": 43.8
      },
      "ol-stats": {
        "Create().cnt": 439,
        "Create().ms-avg": 75,
        "Create()/acquire-cgroup.cnt": 439,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 439,
        "Create()/acquire-mem.ms-avg": 16,
        "Create()/fork-proc.cnt": 438,
        "Create()/fork-proc.ms-avg": 54,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 439,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 877,
        "Destroy().ms-avg": 49,
        "Destroy()/detach-root.cnt": 439,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 439,
        "Destroy()/kill-procs.ms-avg": 12,
        "Destroy()/remove-root.cnt": 439,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 438,
        "childExit().ms-avg": 53,
        "fork().cnt": 438,
        "fork().ms-avg": 54,
        "forkRequest.cnt": 438,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 456,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 438,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:46:58 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:46:58 remove worker.pid",
        "2019/11/19 21:46:58 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 1,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 10.874471426010132,
      "total_seconds": 11.200492858886719,
      "stats": {
        "sandboxes_per_sec": 41.1
      },
      "ol-stats": {
        "Create().cnt": 444,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 444,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 444,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 443,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 444,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 855,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 444,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 444,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 444,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 443,
        "childExit().ms-avg": 0,
        "fork().cnt": 443,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 443,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 461,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 443,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:10 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:47:10 remove worker.pid",
        "2019/11/19 21:47:10 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 15,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 11.645576000213623,
      "total_seconds": 12.09876799583435,
      "stats": {
        "sandboxes_per_sec": 39.0
      },
      "ol-stats": {
        "Create().cnt": 423,
        "Create().ms-avg": 133,
        "Create()/acquire-cgroup.cnt": 423,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 423,
        "Create()/acquire-mem.ms-avg": 73,
        "Create()/fork-proc.cnt": 422,
        "Create()/fork-proc.ms-avg": 55,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 646,
        "Create()/make-root-fs.cnt": 423,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 813,
        "Destroy().ms-avg": 48,
        "Destroy()/detach-root.cnt": 423,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 423,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 423,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 422,
        "childExit().ms-avg": 58,
        "fork().cnt": 422,
        "fork().ms-avg": 55,
        "forkRequest.cnt": 422,
        "forkRequest.ms-avg": 11,
        "fresh-cgroup.cnt": 440,
        "fresh-cgroup.ms-avg": 6,
        "move-to-cg-after-fork.cnt": 422,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:22 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:47:22 remove worker.pid",
        "2019/11/19 21:47:22 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/tmp/tmpj_2i84lu",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "registry_cache_ms": 3000,
        "mem_pool_mb": 500,
        "sandbox": "sock",
        "docker_runtime": "",
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 6.030993461608887,
      "total_seconds": 6.277328729629517,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 48,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 153,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1617,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1620,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1617,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1616,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 1617,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:47:28 remove worker.pid",
        "2019/11/19 21:47:28 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 15.048232316970825,
      "total_seconds": 15.277790784835815,
      "stats": {
        "reqs_per_sec": 277.0
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4155,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4158,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4155,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4154,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 1,
        "fork().cnt": 3,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4155,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:43 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:47:43 remove worker.pid",
        "2019/11/19 21:47:43 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 15.045573711395264,
      "total_seconds": 15.279500246047974,
      "stats": {
        "reqs_per_sec": 272.3333333333333
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4085,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3969,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4085,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3965,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 1,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4085,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:47:58 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:47:58 remove worker.pid",
        "2019/11/19 21:47:58 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 15.071184396743774,
      "total_seconds": 15.30205774307251,
      "stats": {
        "reqs_per_sec": 251.6
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3774,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2864,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3774,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2860,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 2,
        "fork().cnt": 3,
        "fork().ms-avg": 8,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 7,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 3774,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:14 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:48:14 remove worker.pid",
        "2019/11/19 21:48:14 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 1,
        "lambda_count": 100
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/tmp/tmp1z_1d57y",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "registry_cache_ms": 5000,
        "mem_pool_mb": 500,
        "sandbox": "sock",
        "docker_runtime": "",
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": true
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 2.8764302730560303,
      "total_seconds": 3.3339710235595703,
      "stats": {
        "reqs_per_sec": 34.76558430088733
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 101,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 101,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 100,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 142,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 153,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 24,
        "Pause().cnt": 200,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 6,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 2,
        "evict.cnt": 52,
        "evict.ms-avg": 9,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 70,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 100,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 100,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 100,
        "web-request.ms-avg": 24
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:48:17 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:48:17 remove worker.pid",
        "2019/11/19 21:48:17 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 10,
        "lambda_count": 1000
      },
      "pass": true,
      "conf": {
        "trace": {
          "cgroups": false,
          "evictor": false,
          "package": false,
          "memory": false
        },
        "registry": "/tmp/tmp49kpk9wq",
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": true
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda"
      },
      "seconds": 44.26082420349121,
      "total_seconds": 44.81631541252136,
      "stats": {
        "reqs_per_sec": 22.593356169858417
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 8,
        "Create()/acquire-cgroup.cnt": 1001,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1001,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1000,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 154,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1980,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 39,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 19,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 3,
        "evict.cnt": 979,
        "evict.ms-avg": 11,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 41,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 39
      },
      "errors": [],
      "worker_tail": [
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/19 21:49:02 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/19 21:49:02 remove worker.pid",
        "2019/11/19 21:49:02 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 311.9136917591095
}